Brynderi Colliery, Cwmtwrch Contributed by Mrs.Winifred Jean Chart of Alltwen, March 2004
The front cover, or first page, of this document states; "With the Compliments of Brynderi Anthracite Limited, York Mansion, Petty France, London, SW1. And Lower Cwmtwrch, Swansea Valley."
The document being copiedis itself a reprint from the Colliery Guardian of April 5, 1929 N.B there are 10 separate jpg images of two-column pages (over 6 mb in all) and they will take a while to load - anyone not on broadband, forget it . A couple of them may need sideways scrolling to view complete diagrams.
See profile page for copyright and acknowledgements.